In a radio interview Saturday, the head of Peru's civil aviation office, Roberto Rodriguez, said a series of incidents led authorities to shut down operations as a preventative measure. He did not say how long airline service would be suspended.

Mr. Rodriguez noted two recent TANS flights had emergencies where the planes lost engine power. He said those two incidents occurred within six weeks of each other.

In August, a TANS flight crashed into the jungle, killing 40 passengers.